Phonograph-record and method of making the same.



a. POETSCHKE. PHONOGRAPH RECORD AND METHOD OF MAKING THE SAME.

1,274,324. Patented July 30,1918.

APf'LiCATlON FILED NQV. 12 1917.

0070- um um. vnualuu man I UNITED STATES PATENT OFFICE,

PAUL POETSCHKE, OF MILFORD, DELAWARE.

rnouosmu-nncoun AND METHOD or MAKING sum.

Application filed November 12, 1917. Serial No. 201,580.

To all whom it may concern:

Be it known that I, PAUL PoETscHKE' a citizen of the United States, residing at Milford, in the county of Sussex and State of Delaware, have invented certain new and useful Improvements in Phonograph-Records and Methods of Making the Same; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same. i

This invention relates to sound records and a method for makin the same.

In the following specification and claims,

thewords sound records are utilized in the sense of meaning the article upon which the sound record may be or upon which the sound record ismade.

Phonograph records are now manufactured usually, entirely of an integral body of one homogeneous composition of material, or a body or base havinga facing or coating to receive the record.

One of the objects of my present invention is to r'oduce a body or base for sound records, w ioh may be faced with any suitable or usual sound impression receiving material such for instance, as shellac, phenol-formaldehyde condensation products, or

rosin, or waxy compositions. Therefore, my invention has the further object of roviding for the manufacture of soun or phonograph records at aless expense, than where the same are made as usual of an integral, homogeneous body, of the impres-o sion receivingmaterial. A further object of the invention is to provide forthe manufacture of sound records of stronger construction, and therefore, whichwill not be so apt to warp or break as a wholly wax-like article.

Therefore, according to no method, I construct a body or base for t e record, by building the same up of a plurality of layers of fibrous sheet material or paper, which V are cemented to ether by cementitious plastic material oft e nature of artificial stone which is self-hardening and strengthens, reinforces, andincreases the rigidity of the base. By constructindg a base of layers and cement, th e desired egree of resilienc is produced which could not be obtaine if either cement or pa or alone is utilized in the base element. he cement to which 1' 30 Baum refer and which I use, is to be distinguished from glue or an adhesive in that it has the properties of artificial stone 'andwill harden. in a period of time whichpis controlled by the degree of heat to' which it is subjected, the higher the heat, more rapid being the. process of setting of the material, and the reference to papertis intended to include paper of any sultable material or combinations of material and alsot'various fibrous sheets or layers.

Therefore, with the above objects in View, as will be more fully explained hereinafter, and as clearly understood by those skilled in the art, the invention consistsin the method and the article produced thereby, and which consists in erecting a base of sheets of fibrous material or paper, cement- 'or impression.

Embodiments of the invention are illustrated in the accompanying drawing, in

which,

Figure 1 is a sectional view through a record structure of one type,-

Fig. 2 is-a sectional view through a record structure of another? type, and

Fi 3 is a sectional view through one of the s ieets which is impregnated with a substance to facilitate the application of the impression receiving material,

Fig. 4-is a sectional view of a further modified form of the device.

To secure the desired advantages and improvements in my record, over records of the ordinary construction, I prefer to utilizes. cement consisting of a base of magnesiumoxychlorid with any suitable filler of an inert or mineral form such as silica or silex,

powdered glass, powdered marble, chalk or be utilized in the construction of the base,

The fibrous sheet or paper to may be assembled in any number of layers,

between each of which a layerof the cement is introduced md I- may, if desired, introduce any number of perforated sheets as article.

aper, the interstices of which will be filled y the cement.

The laminated structure so formed is allowed to harden prcferabl in the presence The shaped record body or base, after it is hardened, is coated with any of the usual materials, or any preferred material having the characteristics of receiving and retain i'ng the sound impression, such for instance,

as shellac phenol-formaldehyde condensation products, rosin or wax or any combination of these or these and any other material and to facilitate the adhesion or attachment of the record receiving facing to the base, the outer or uppermost layer of paper or fibrous sheet may previously be treated by the application of a thin coat of any suitable rial, as for instance, any of those just mejt ioned, this application being secured, if desired, by previously impregnating the outer sheet before it is assembled in the body structure or this outer sheet may be coated after the body is assembled, however, it is 80 not essential that the base be prepared in any manner forthe reception of the facing coat, as satisfactory adhesion may be secured in some instances, w'thout any such previous coatings. It is un erstood that the article thus manufactured, may be termed a sound record, and this record may be impressed upon the record receiving surface of the record in anysuitable manner, as is well known.

The nature of the invention may be read- 40 ily comprehended by reference to the drawings in which, in Fig. 1, there is shown a plurality of layers of paper 22 connected together as at 3 by the mineral cement, an example of which is cited'above, and upon that layer of paper which is outermost of the record body or base, there is provided the sound impression receiving substance 4. To facilitate the adhesion of the record substance to the base, the outer sheet of material 2, as illustrated in Fig. 3 as being impregnated with a vehicle of suitable nature at 4', while in Fig. 2 there is interposed between the record receiving body or spacing '4: and the outer sheet or layer of material 2, a thin coating of material 4" of a nature which will assist in the adhesion of the spacing 4 to the base.

The sheets 22 of which the base is formed may, as above'mentioned, be of any suitable number, may be either perforate or imperforate or in any combination of perforate or imperforate sheets, one form of which is illustrated in Fig. 4, in which the outer layer 2 are shown as imperforate and 65 between which are arranged a perforate sheet 2 through the interstices of which the cementitious material will be expressed or contained in the assemblin of the layers.

It is to be understoo of course, that the sound record, manufactured by the above described method, may be made either in the form of a plate or disk or in the form of a cylinder,or otherwise shaped as desired.

What. is claimed is:

1. A sound record having a laminated body including a mineral cementitious binder having the properties of artificial stone, and an impression surface.

2. A sound record having a laminated structure inclu ling a base composed of fibrous layers cemented by a composition of magnesium-oxychlorid and a filler.

3. A sound record having a laminated structure including a base composed of fibrous layers cemented by a composition of inagnesium-oxychlorid and an inert filler.

4. A sound record having a body composed of fibrous layers bound by a mineral ccmentitious intermediate layer.

5. A sound record having a body composed of fibrous layers and a mineral cement inder, and having a coat of material to facilitate adhesion of an impression receiving material.

6. A sound record consisting of layers of paper, and a reinforce of mineral cement, and a record receiving coat.

7. A sound record consisting of a body structure formed of lamina of paper and a cement of magnesium oxid reduced to plas tic condition by a solution of magnesium chlorid.

8. A sound record consisting of a body structure of layers of paper, perforate and imperforate, having a cementitious binding, and a record receiving coat.

9. A sound. record consisting of a body of layers of paper and a mineral cementltious binder therefor; an outermost facing of record receiving material; and thereunder a material to facilitate attachment of the facing to the body.

10. The method of makings; sound record which consists of cementing layers of fiber with a mineral cement having the pro 7- erties of artificial stone, and then facing tl fe article.

11. The method of making a sound record which consists of cementing under pressure layers of sheets with a mineral cement hav- 120 ing the properties of artificial stone, and then faeing'the article. i

12. The method of making a sound record which consistsof cementing layers of paperwith a cement having the roperties of artificial stone," and then facing the article.

13. The methodof making a sound record which consists of makinga cement of mag- 'nesium oxy-chlorid and .a filler, building a a body of layers of fiber sheets and said ce- 180 ment, allowing the body to harden, and then applying a record receiving facing.

14. The method of making a sound record which consists of making a cement of magnesium oXy-chlorid and a filler, building a body of layers of fiber sheets and said cement, subjecting the body to pressure, allowing the body to harden, and then applying a. record receiving facing.

15. The method of making a sound record which consists of making a cement of. nut}:- nesinm oXy-chlorid and a filler, building a body of layers of fiber sheets and said ce ment. allowing the body to harden, preparing the surface of the body for the application of a facing, and then applying a record receiving; facing.

16. The method of making a sound record which consists of making a cement of magnesium oxycl1lorid and a 'filler, building a body of layers of fiber sheets and said cement. allowing the body to harden, pre aring the surface of the body for the app ication of a facing and then applying a record receivingfacing by the application of a thin coat of wax-like material as a foundation.

17. The method of making a Sound record which consists of binding a body of fibrous sheets and a cement of magnesium oxyehlorid and an inert tiller. allowing the body to set, and applying a record receiving materiai.

In testimony whereof I afiix my signature.

PAUL POETSCHKE. 

